JPH05337269A - Sewing device - Google Patents

Abstract

PURPOSE:To automatically sew a cylindrical peripheral side wall and a disk-like bottom wall of a container bag by fixing an outer edge part of a peripheral side wall and an outer edge part of a bottom wall of the folded-back container bag to a cloth placing annular body, protruding the outer edge part of a folded-back part from the outer edge of the cloth placing annular body and automatically sewing the whole periphery of the side wall and the bottom wall. CONSTITUTION:In a machine frame 1, the lower side rotating body 3 having a cloth placing annular body 6 in the upper part is provided so as to be freely rotatable horizontally, and in the upper part of the lower side rotating body 3, a forward/backward moving table 11 is provided so as to be freely movable forward and backward. Also, in the upper side rotating body provided so as to be freely rotatable horizontally in the forward/backward table 11, many cloth inserting/holding pieces 15 are provided so as to be freely movable vertically at intervals of a prescribed angle, and the upper face of a bed of a sewing machine 45 provided on the side of the lower side rotating body 3 is set to the same face as the upper face of the cloth placing annular body 6. The whole periphery of the side wall W1 and the bottom wall W2 is folded back, the folded-back part is placed on the cloth placing annular body 6 and held down by the cloth inserting/holding piece 15, and thereafter, the bed is positioned in the lower part of the outer edge part of the folded-back part, and by rotating the rotating body, the whole periphery of the side wall W1 and the bottom wall W2 is automatically sewn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing device.

[0002]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sewing device capable of automatically sewing a cylindrical side peripheral wall and a disc-shaped bottom wall of a container bag.
However, the material to be sewn is not limited to the container bag.

[0003]

In order to achieve the above object, the present invention employs the following means. The present invention relates to a lower rotary body that is horizontally rotatably provided on a machine frame and has a cloth placing ring body on an upper portion, and a front and rear movable body provided on the machine frame so as to be movable back and forth above the lower rotary body. A moving table, an upper rotating body horizontally rotatably provided on the front and rear moving table, and a cloth on a cloth placing ring body that is vertically movable at a predetermined angle between the upper rotating body. It has a large number of cloth holding pieces and a sewing machine provided on the machine frame at the side of the lower rotary body, and the sewing machine is such that the upper surface of the bed is flush with or substantially the same as the upper surface of the cloth placing ring. It is provided on the machine casing so as to be flush.

[0004]

The present invention has the following functions. The outer edge portion of the side peripheral wall and the outer edge portion of the bottom wall of the folded container bag are fixed to the cloth placing ring by a cloth holding piece. In that state, the outer edge portion of the folded portion protrudes from the outer edge of the cloth placing ring. After such preparations are completed, if the main switch (not shown) is turned on, the sewing machine operates and the lower and upper rotating bodies intermittently or continuously rotate to cover the entire circumference of the side peripheral wall and the bottom wall. Automatic sewing is performed, and then thread cutting is performed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the front side of FIG. 1, the rear means the back side, the left means the left side of FIG. 1, and the right means the right side. As shown in FIG. 1, a pair of left and right lower rotating bodies 3 are horizontally rotatably provided on the left and right of the front portion of the machine casing 1.

As shown in FIG. 1 and FIG. 3, the lower rotary body 3 has a lower rotary disk 4 and a peripheral edge portion of the rotary disk 4.
It has connecting rods 5 which are erected at predetermined intervals around them, and a cloth placing ring 6 attached to the upper ends of these connecting rods 5.

As shown in FIG. 2, FIG. 4 and FIG. 5, the horizontal bar 9 is positioned above each of the lower rotating bodies 3 so that the longitudinal direction of the horizontal bar 9 is oriented in the longitudinal direction. It is provided. A pair of left and right guide rails 10 are provided on the left and right side surfaces of each horizontal bar 9 so that the longitudinal direction thereof is oriented in the front-rear direction.
1 is suspended so that it can be moved back and forth, and this back and forth moving table 11 can be moved back and forth by a known drive device (not shown) such as an air cylinder.

A rotary shaft 13 is rotatably provided on the front-rear moving table 11 with its axis oriented in the vertical direction. The axis of the rotary shaft 13 and the axis of the lower rotary member 3 are It is designed to overlap when viewed from the front.

As shown in FIGS. 3, 6 and 7, an upper rotary body 14 is provided at the lower end of the rotary shaft 13, and the upper rotary body 14 is provided on the cloth placing ring body 6 as shown in FIG. A large number of cloth holding pieces 15 for holding the material to be sewn (the cylindrical side peripheral wall W1 and the disc-shaped bottom wall W2) are provided by a horizontal pivot 16 so as to be vertically swingable at predetermined angles. The cloth holding pieces 15 are each operated by an air cylinder 17. Each of the fluid pressure cylinders 17 is operated by an operation valve 18 provided in correspondence therewith, and each of these operation valves 18 has an operation rod 19 which is horizontally movable, and the operation rod 19 is pushed in. And the rod of the fluid pressure cylinder 17 protrudes so that the cloth clamping piece 15 clamps the material to be sewn in cooperation with the cloth placing ring body 6, and when the operation rod 19 is protruded, The rod is retracted so that the cloth holding piece 15 is separated from the material to be sewn.

As shown in FIGS. 6 and 7, the operating rod 19 is provided with a dog 22 at the upper end of a fixed column 21 provided on the machine frame 1 so as to face the operating rod 19.
Is pushed by the dog 22 when passing through the position of
Is supplied with operating air from the air supply port 23 so as to be projected all at once.

As shown in FIGS. 4 and 5, the rotary shaft 1
A disc 25 is attached to the upper end of 3, a vertical plate 26 is attached to the disc 25, a horizontal guide rail 27 is provided on the vertical plate 26, and a pair of engaging sliders 28 are horizontally movable on the guide rail 27. And the engaging sliders 28 are operated by an air cylinder 29. The engaging slider 28 is adapted to engage with an engaging groove 33 of an engaging block 32 provided on the front-rear moving table 11 via an arm 31. In addition, it engages with the engaging groove 36 of the rotary bar 35. The rotary bar 35 is provided at the lower end of a rotary shaft 37 that is rotatably provided in the upper part of the machine frame 1 such that the axis of the rotary bar 35 coincides with the rotation center of the lower rotary body 3.
The rotary shaft 37 is power-coupled by a power transmission mechanism 38 so as to rotate synchronously at the same speed as the lower rotary body 3 (see FIG. 1).
The input shaft of the power transmission mechanism 38 is a motor 39.
It is designed to be rotated by (see Fig. 1).

With such a structure, the front and rear moving table 11 is moved to the front side so that the axis of the rotary shaft 13 is aligned with the rotary shaft 37, and then the engaging groove 33 of the engaging block 32 is engaged. By engaging the engaging slider 28 which has been engaged with the engaging groove 36 of the rotary bar 35, the rotary shaft 13 is rotated.
7, the upper rotary body 14 and the lower rotary body 3 can ultimately be synchronously rotated. It should be noted that the front and rear moving table 11
When the (upper rotary body 14) is retracted, the engagement slider 28 is pulled out from the engagement groove 36 and fitted into the engagement groove 33. By doing so, it is possible to prevent the upper rotating body 14 from freely rotating when the front and rear moving table 11 moves backward and then moves forward.

As shown in FIGS. 2 and 8, a pair of guide rails 42 are provided on the lower rear portion of the machine frame 1 so that the longitudinal direction thereof is oriented in the left-right direction, and a left-right moving table 43 is moved left and right on the guide rails 42. Freely installed, this left and right moving table 4
3 is moved to the left and right by a known drive device (not shown) including a motor and a ball screw mechanism.

A front-rear moving table 44 is provided on the left-right moving table 43 so as to be movable back and forth, and the front-rear moving table 44 can also be moved back and forth by a known driving device (not shown). A fully automatic sewing machine 45, in which raising and lowering of the cloth presser and thread cutting are also automated, is mounted on the front-back movement table 44. The sewing machine 45 is configured such that the longitudinal direction of the horizontal body 46 of the arm is directed in the front-back direction, and The needle 47 is positioned forward, and the upper surface of the bed 48 is below the lower surface of the cloth placing ring 6.

With such a structure, the sewing machine 45 can be positioned behind either the left or right lower rotary body 3 (upper rotary body 14).

[0016]

Next, the operation of the apparatus of the embodiment will be described. First, with the upper rotary body 14 on the right side retracted, the cylindrical side peripheral wall W1 of the container bag is fitted into the lower rotary body 3, and the upper end portion of the side peripheral wall W1 is placed on the cloth mounting ring body 6. ..
Then, the disk-shaped bottom wall W2 is covered over the side peripheral wall W1. After that, the upper rotary body 14 is moved forward to rotate the rotary shaft 1
3 is positioned directly below the rotation shaft 37, and the engagement slider 28 is engaged with the engagement groove 36 of the rotation bar 35. After that, the outer peripheral portions of the side peripheral wall W1 and the bottom wall W2 on the left side of the dog 22 are folded by hand or the like as shown in FIG. In this way, the folded portion is placed on the cloth placing ring 6. After that, the foot switch (not shown) is turned on for a short time to rotate the motor 39 by a predetermined amount. Then, the lower rotating body 3
6 and the upper rotary body 14 rotates counterclockwise in FIG. 6, and the portion of the folded-up portion passes below the dog 22, so that the operating rod 19 in a protruding state corresponding to that portion pushes against the dog 22. As it is retracted, the rod of the fluid pressure cylinder 17 protrudes, the cloth holding piece 15 that has been raised up to now descends, and the folded portion is held by the cloth placing ring body 6 and the cloth holding piece 15.・ Fixed.

By repeating the above folding operation, the entire circumferences of the side peripheral wall W1 and the bottom wall W2 are folded. Then, the sewing machine 45 is positioned at the sewing position, and the bed 48 is positioned below the outer edge of the folded portion. By setting the position of the front-rear moving table 44 at the sewing position corresponding to the sewn product, the front-rear position of the front-rear moving table 44 is not changed while the same sewn product is sewn.

When the main switch (not shown) is turned on after such preparations are completed, the sewing machine 45 is operated, and the lower rotary body 3 and the upper rotary body 14 are intermittently or continuously rotated, so that the side peripheral wall W1. And the entire circumference of the bottom wall W2 is automatically sewn, and then thread cutting is performed.

Meanwhile, in the meantime, the side peripheral wall W1 and the bottom wall W2 are set in the left lower rotary body 3 in the sewing preparation state as described above.

When the sewing on the right side is completed, the cloth holding piece 15 is raised at once and at the same time, after which the engaging slider 28 is disengaged from the engaging groove 36 of the rotary bar 35, and then the front and rear moving table 11 is retracted. Take out the finished sewing product. Then, during the work, the sewing machine 45 is moved to the left side to move the left side peripheral wall W1.
And, the entire circumference of the bottom wall W2 is sewn. Then, after taking out the sewing completed product, the side peripheral wall W1 and the bottom wall W2 are set in the sewing preparation state on the lower rotating body 3 on the right side as described above.

The lower rotary body 3 and the upper rotary body 14 may be one in number. Further, in this specification, the cloth includes all flexible sheet-like members.

[0022]

The present invention has the following effects due to the above-mentioned configuration. According to the present invention, the cylindrical side peripheral wall and the disc-shaped bottom wall can be easily and automatically sewn.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged view of part A of FIG.

FIG. 4 is an enlarged view of part B of FIG.

5 is a sectional view taken along line VV of FIG.

6 is an enlarged sectional view taken along line VI-VI of FIG.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is an enlarged view of part C of FIG.

FIG. 9 is a cross-sectional view showing a folded state of the outer peripheral portions of the side peripheral wall and the bottom wall.

[Explanation of symbols]

 1 Machine frame 3 Lower rotating body 6 Cloth mounting ring body 11 Front-rear moving body 14 Upper rotating body 15 Cloth holding piece 45 Sewing machine 46 Horizontal body 47 Needle 48 Bed

Claims (1)

[Claims] 1. A lower rotating body, which has a cloth-carrying ring at the top, is horizontally rotatably provided on the machine frame, and is provided on the machine frame so as to be movable back and forth above the lower rotating body. Front-rear moving table, upper rotating body horizontally rotatably provided on the front-rear moving table, and cloth on the cloth-carrying ring body that is vertically movable at predetermined angles on the upper rotating body. And a sewing machine provided on the machine frame at the side of the lower rotating body, wherein the upper surface of the bed is flush with the upper surface of the cloth placing ring body or A sewing device provided on the machine frame so as to be substantially flush.